.App {
  text-align: center;
}

.App-logo {
  height: 40vmin;
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .App-logo {
    animation: App-logo-spin infinite 20s linear;
  }
}

.App-header {
  background-color: #282c34;
  padding: 20px;
  color: white;
}

.App-link {
  color: #61dafb;
}

@keyframes App-logo-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  .card {
    padding: 20px;
    margin: 10px 0;
  }
  
  .japanese-text {
    font-size: 20px;
  }
  
  .chinese-text {
    font-size: 18px;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 5px;
  }
  
  .card {
    padding: 15px;
  }
  
  .japanese-text {
    font-size: 18px;
  }
  
  .chinese-text {
    font-size: 16px;
  }
  
  .btn {
    padding: 8px 16px;
    font-size: 12px;
  }
}
